High-Power Reference Class AB Reference-Grade Stereo Audio Power Amplifier

    Minimalist Design
    Reference-Grade Performance
    Power Output Stage
    Patented Driver Module
    Customized Power System
    Efficient Cooling System
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Product Price
Terms & conditions
This Product is a Pre-order

Processing Time before shipping: 15 working days for orders placed after 15 November 2022. No cancellation of order is allowed once PO is placed. avg.

This is a rough estimation. It may change without prior notice.

Free standard shipping to most countries

Free express shipping on orders over $270*. Enjoy free tax and duty paid to most countries. Please refer to our shipping FAQ to see if you apply.

Covid-19 Shipping Delay Notice

Shipping may be delayed due to covid-19 depending on your country regulations.
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Authenthic Products

Linsoul Audio is the authorized distributor. All products are authentic and genuine.

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Worldwide Free Shipping

We are located in China but send our products worldwide for free. T&Cs apply.


1 Year Warranty

We provide 1 year warranty for the all products except the cables*.

Foundation for the Future Product Direction of SONCOZ

SGP1 is a Class AB Reference Stereo Audio Power Amplifier Designed for High Resolution Audio(HRA)Recording and Playback Systems, which has been Developed by SONCOZ for 3 Years. The SNR and THD Extraordinary Performance of the SGP1 Pushes the Performance of Fully Discrete Class AB Amplifiers to a Whole New Level. Each Channel 4-Parallel NPN/PNP Power Tube Push-Pull Output, into 8 Ohm Load Output Power Up to 120W, which Makes SGP1 Push Difficult Load Speakers also Become More Comfortable. SGP1 is not only the Core Product of SONCOZ, but also Lays the Foundation for the Future Product Direction of SONCOZ Brand. SGP1 is Specially Designed for Speaker System to Present Acoustic Expression,From Deep Bass to Clear High Tone,SGP1 Achieves Rich Gradation of Sound Quality.

Minimalist Design

We believe that every aspect of our products, such as the Look and satisfying feel of the controls, contributes to the overall SONCOZ product experience. Because of this, SONCOZ products exude the hallmarks of Scandinavian design-simple, elegant design, with approachable and easy to understand functionality. Such as ours SGD1, SGA1, etc. In other words,SONCOZ products follow a minimalist Design, nothing more, nothing less, everything is balanced, proportional and harmonious.

Reference-Grade Performance

High-Resolution Audio is Intrinsically Tied to Low Noise and Low Distortion. System Noise is the Lower Resolution Limit of an Analog System because it Determines whether the Smallest Signal is Masked by the Noise Floor. Therefore, it is Highly Desirable to Pursue the Inherent Low Noise Level and Wide Range of Dynamic States. The Full Rated Power Output A-Weighted SNR is Approximately 130 dB, which Makes the SGP1 15 to 30 dB Quieter Than Most Top-Quality Power Amplifiers. 130 dB is Approximately Close to the Noise Performance of an excellent 22-bit Digital System.

Power Output Stage

The Role of the Power Amplifier is to Faithfully Amplify the Sound Signal and to Vibrate the Speaker Precisely. Thus the Great Drivability and Firm Linearity of the Output Circuit are Essential. SGP1 is Readying for Instantaneous High Energy and Speaker Impedance Changes. For the Circuit configuration with this Mighty power, SGP1 Based on Our Long Experience in Amplifier Development, Finally Designed a Patented Module and 4 Pairs of Tube Parallel Push-Pull Output Amplifier Circuits. This Transistor Extends High-Frequency Response and Features Tighter Tolerance Gain Matching Between Complementary NPN/PNP Pairs. These Circuits Reduce Distortion at High Frequencies or Low Sound Volumes, Resulting in Quieter SGP1 Background Noise, while the Sound Emotion is Finely and Intensely Expressed, and the reproducing Minimal Sound Data Precisely.

Patented Driver Module

The SONCOZ-Patented Driver Module Virtually Eliminates All Traces of Distortion at All Input Signal Levels and Loading Conditions. The SGP1 Shows No Traces of Crossover Distortion when Driver Module is Combined with the Push-Pull Outputs Stages Switch Between Different Output Loads.Without Crossover Distortion, Low-Frequency Details are Released with Precision,while the SGP1 Remains Virtually Distortion Free During Driving Heavy Loads.

Customized Power System

Realistic Sound Quality Requires Abundant Power, which is the Cornerstone of Amplifier Design for SGP1 Audio Systems. In fact, we Designed New High Performance Power Modules to Provide the Enormous Power Required by the Amplifier Modules. This Enables SGP1 to Provide Immediate and Continuous Mighty Power Output. Before Rectifier Filtering after AC Input, SGP1's Power Module is Equipped with Four Large Capacitors of 2700uF/200V to Suppress the Interference and Noise of the Grid, which Provides a Strong Guarantee for SGP1 to Obtain Pure Power Supply. The Ultra-low Noise and Extremely Fast Rise Time of the Power Module, Coupled with the Absolute Linear Amplification of the Power Amplifier Module, Enables SGP1 to Produce Naturally Fast, Clean and Agile Sound in the Audible Frequency Response Range. More Importantly, in order to Reduce the Transmission Loss of the Power Supply and Output under High Power, the Main Current Wire between the Power Supply Unit and the Output Stage is Directly Hardwired with Multi-Group Multiplexed 6N Occ Single Crystal Copper Wire.

Efficient Cooling System

Each Heatsinks Starts with 5.2 kg of Aluminum Block and after about 3 Hours of Machining, 60% is Removed to Get 2 kg of Refined Aluminum. This Design Provides Over 300,000 Square , Milimeters of Heat Dissipation Surface Area per Amplifier. More Importantly, the Thickness of the Heatsinks Fins Varies Slightly to Help Reduce Resonances and Ringing in the Heatsinks, while Multiple High Power Heat Pipes Evenly Distribute Heat for Optimal Thermal and Electrical Properties. This High Efficiency heatsinks Greatly Improves the Cooling Capacity of the Power Amplifier Module, Ensuring the Safe and Reliable Operation of SGP1 at Full Rated Power.

No Warm-Up Required

Unlike Most Class AB Power Amplifiers, the SGP1 Reaches lts Full Rated Performance in L ess than One Minute. For this Reason, there is Absolutely No Reason to Keep the SGP1 Powered On when not in Use. The SONCOZ-Patented Driver Module in the SGP1 Keep it very Stable Over a Wide Range of Operating Temperatures.

More Details

The High-Speed Output Power Following Circuit Enhances the Meter' s Pointer Responsiveness and the Longer Pointer Swing Arm Greatly Improves Readability Across the Amplifier' S Output Range. Listening to Music Becomes a Wonderful Enjoyment with the Transparent Mechanical Analog Meters Pointer that Swings Flexibly in Real Time with the Strength of the Music. The Warm Orange LED Backlight is a Continuation of the SONCOZ Brand Color and a Balance Between Visibility and Non-Glare. The SGP1 is Equipped with a Simple, User-Friendly Control Interface. Intuitive Push Buttons, and the IO Triggers Guarantee Control Over Power. SGP1 can be Powered On or Soft- Started On Time to Avoid Putting Pressure on your Listening Room Electrical System. The Jack is 3.5 mm TRS Connector. The Tip is Wired to the TRIGGER I/O Bus and the Sleeve is Wired to Chassis Ground and there is No Connection to the Power Ground Ring. The Stray Current Generated by the Ground Loop in the Chassis Increases the Internal Resistance of the Power Supply or Generates Magnetic Field, which may Lead to the Deterioration of Sound Quality. SGP1's Vibration-Cushioned Footpads Have No Grounding Loop. The CNC Aluminum and Rubber Combined Foot Mat can not only Block the External Vibration, but also Alleviate the Internal Vibration. The SGP1 Provide very High-Quality Customed Twist-L ock Speaker Connections. These Connectors have very L OW Resistance and the Ability to Carry High Current Reliably.

8 Kg
Rated Out Power
130 dB, A-Wt., 20 ~ 20k Hz
< -110 dB (< 0.0003%), A-Wt., 20 ~ 20k Hz
Output Current
8.5A Peak Output Current per Channel
Output Voltage
95 Vpp Peak -to-Peak Output per Channel
Output Configuration
Bipolar 4-Parallel Push-Pull per Channel
Frequency Response
+0.12dB @82; +0.13dB @42,@20~20kHz
Input Sensitivity
Input Impedance
0C to 50 "C Ambient Temperature; Up to 80% Humidity, Non-condensing

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Our Shipping Process

If everything goes right our system will automatically generate your order and send you a confirmation email. If you don't receive the confirmation email please double-check that it wasn't automatically stored in your spam or promotions folder.

3 Working Days*

Most of the items you see are in stock and ready to be shipped after 3 working days. If you plan to order a custom (Design or Fit) product, a pre-order, or a made to order item processing times may change on item to item basis.

Standard Shipping
15 to 30 Days.

Standard shipping is offered free worldwide for orders under $269 USD (with some exceptions), but please consider that delivery times may vary considerably depending on your country, up to 90 Days.

Express Shipping
3-6 Working Days.

Most items over $270 include free express shipping (DHL or similar). If your order total is under $270 you can manually add Express Shipping at the checkout page for $15.00 - $35.00USD

World-Wide Shipping

Shipping FAQ

Which countries do you ship to?

We are generally able to ship to most countries via Express Shipping, and many countries via Standard Shipping. You may clarify this with our team to check whether Standard Shipping is available to your country.

We cannot ship to addresses that are "PO boxes or APO/FPO".

*Note: Generally, we can only do Selected Shipping to India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.
This may be subjected to changes due to unpredictable issues such as Covid, war, and etc.

How much does shipping cost?

We have two shipping methods - Standard Shipping and Express Shipping.

Standard Shipping is free for most countries, while Express Shipping is 15-35USD depending on your country. If your order is over 270USD, Express Shipping is free*. 

*This applies for most countries. However, large items such as headphones and desktop DAC/AMPs (e.g. HarmonicDyne G200, MUSICIAN MDP-2, and etc.) are excluded.

Shipping fees exclude import taxes or processing fees that may be applicable for your country. Linsoul is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for the two-way freight charges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.

Some parcels claimed to be “returned to the seller” may be destroyed by the post office or customs officers when buyers refuse to accept their parcels or fail to pay for their taxes. No refund will be processed for such cases.

Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Linsoul will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.

For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments. 
Please contact us before placing an order, should you have any queries regarding shipping.  

How long does it take to receive the order after it is placed?

For in-stock products, your order will be shipped within 3 working days. You may check with our staff regarding the in-stock status of any products. 

Customized items will take a longer time. Please contact our staff for more information.

On normal non-sale days, once your parcel has been shipped out:

  • For Standard Shipping, it takes about 2-4 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country, its customs and other factors.* The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to Express Shipping or keep the waiting time in mind.
  • For Express Shipping, it takes about 3-7 days for items to be delivered after shipping out.

*Note: Timings might be affected due to festive seasons or other unforeseen circumstances

What happens if the parcel has been shipped but not delivered?
  1. First, kindly contact your local courier using the local tracking number.
    If your parcel were to be in transit for at least 3 months, it may have been lost in transit.
    For orders below $50USD, you may either opt for a one-time reshipment of parcel OR a full refund of the amount paid in cash via PayPal/Credit/Debit card.
    For orders above $50USD, we will only process a 50% refund of your order paid in cash via PayPal/Credit/Debit card. Should there be any concern about Standard Shipping, you are encouraged to opt for DHL Express Shipping instead.
  2. Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:
    • Wrong address or phone number provided by recipient
    • Recipient was uncontactable when courier company contacted
    • Refusal to sign for the package by recipient
    • Lost or damaged parcel because recipient opted for “no-signature delivery”
    • Refusal to pay for the local tax/processing fee by recipient
    • Refusal to provide supporting documents for custom clearance by recipient
Who will pay for the import tax/custom fees

Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.

Should you be unwilling to pay for the fees and reject the delivery of the parcel, you will still have to pay for the shipping cost. Linsoul will only refund the amount of your order after deducting the two-way shipping fees incurred.

How do I get help for my order?

Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team might not be available during non-working days and weekends, please place your order wisely.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email ( or website chat. We will help you with the changes if that could be done.

In general, upon receiving your parcel, please confirm the contents of the package and ensure that the package is in good condition before signing for it. All customers are strongly advised to take an unboxing video of their parcel and packaging when opening their parcels and products.

For faulty/missing items, please send an email to for after-sale services. The following details are required.
1) Send an email to with an appropriate Subject Title 
2) Provide your order number and state the issue clearly
3) Attach photos and videos to show that your product is faulty/missing. Shipping details on the parcel packaging have to be clearly visible.

If the photos/videos provided are insufficient to prove the stated issue, we will enquire more. Once the issue has been confirmed, we will arrange for a replacement, partial refund or a full refund (where applicable). For incorrect products, Linsoul reserves all rights in deciding whether you need to return the incorrect item or not. Please kindly contact us via email first. Our team aims to review your email within 3 working days.

For other queries, the fastest way to contact us is via our website or Discord

Linsoul Audio will not be responsible for parcels that have been damaged during the transit process.

Do I get tracking details for my order?

After placing an order, you will receive the order confirmation email. After your order has been shipped out, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.

For more than 1 orders placed under the same account and shipping address, Linsoul will automatically combine the orders and ship them out via one tracking number. Should you have special requests to have the orders shipped separately, please kindly contact us via Discord or our website's chat. We will do our best to help.

What shipping companies do you use?

We collaborate with these courier companies:
Standard Shipping: 4PX, UBI, NinjaVan, and Yun Express
Express Shipping: DHL Express, FedEx and SF Express

Last updated: 1 November 2022

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